Automatic record rewind and replay mechanism for piano players



H. A. AND B. R. VAN VALKENBURG. AUTOMATIC RECORD REWIND AND REPLAY MECHANISM FOR PIANO PLAYERS. 7 APPLICATION FILED NOV-28, I919- 1,420,594;. 'PatentedJune 20, 1922.

iSIIEETS-SHEET I- gwpentoz Harold ll. Van Va/kenburg. Burt H. Van Va/lzenburg.

ma/awgy z giz I "I I I I H. A. AND B. R. VAN VALKENBURG. AUTOMATIC RECORD REWIND AND REPLAY MECHANISM FOR PIANO PLAYERS.

APPLICATION FILED NOV-28. I919.

Patented June 20, 1922.

6 SHEETS$HEET 2.

JH/udnh"! Harold fl. Van Va/kenbz/rg Burt R.Va/z Va/kenbvry.

y H. ALAND B. R. VAN VALKEN BURG. AU TOM'ATIC RECQRD, REWIND AND REPLAY MECHANISMTOR PIANO PLAYERS.

APPLICATION FlLED NOV.2B, 191.9.

Patented June 20, 1922..

6 SHEETS-SHEET 4.

elrtozueq H. A. AND B. R. VAN VALKENBU'RG.

AUTOMATIC RECORD REWINDAND REPLAY MECHANISM FOR PIANO PLAYERS.

- APPLICATION FILED. NOV.28, 1919.

1,420,594. Patented June 20, 1922.

6 SHEETSL-SHEET 6.

n n h 11 1 /''55 i. $2 Y E 175 355 WW 3049 Harold lVanVzl/xenbqg 5 3M 3 Bur: RVanVal/renburg.

@ selzmjd'v UNITED STATES PATENT" OFFlCEZ.

Harmonia A. VAN VALKENB'U'RG nun Bum R. VAN V'ALKENBURG, or OAKLAND,

cnmronnm.

Auteur/ratio nnoonn mam) Ann REPLAY TEEOHANISM FOR PIANO PLAYERS.

Specification of Letters Patent.

Patented J nine 20, 1922.

Application filed November as, 1919. Serial Nb. 341,171..

To all wlwmc'tmag 001mm.-

Be it known that we. HAROLD A. VAN VAL- nnneune and BURT R. Van VALKnNeune, citizens of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Automatic Record Rewinds and Replay Mechanism for Piano Players, of which the following is a specification. I

Our invention is an automatic record rewind and replay mechanism for piano players.

Referring to the annexed drawings which form a part of this specification:

Figure 1 is a front elevation of our invention.

Figure 2 is a side view of the rewind and replay pneumatic control unit.

Figure 3 is an end view of the unit shown in Figure 2. v

Figure 4: is a bottom planof the unit shown in Figure 2.

Figure dis a top plan view of the unit show n in Figure 2 with the upper part thereof removed.

Figure 6 is a bottom plan of the unit shown in Fig; 2 with the lower section thereof removed.

Figure 7 is an upper plan of the lower section-of the unit shown in Figure 2.

Figure 8' is a cross sectional view of the unit shown in Figure 2 taken on line 8-8 of said figure.

Figurefi is a plan view of the timing valves and arm.

Figure 10 is an end view of the timing.

valves.

Figure 11 is a sectional view of. the timing. valves-taken on line 11-11 of Figure 10.

Figure 12 is a front view of the timing valves. a

Figure 13 is a side view of the vacuum control unit for the tracker bar and the rewind and replay shift control unit.

Figure 14; is a cross section of the unit shown in Figure 13 taken on line 1 1-14 10f Figure 13. t

Figure 1? unit shown 1n Figures13 and 1d taken on line 1515 of Figure 1 1.

Figure 16 'is a front view of the rewind and replay shift pneumatic.

is a longitudinal section of the Figure 17 is a rear view of the rewind and replay shift pneumatic.

Figure 18 is a cross section of said shift pneumatic taken on line 1818 of Figure 17. t Figure 19 is a cross section of said shift pneumatic taken on line 19-19 of Figure 16. Figure 20 is a cross section of said shift pneumatic taken on line 20 -2O of Figure 16. Figure 21 is a side view of the rewind and replay pneumatic control unit.

Figure 22 is a longitudinal section of the rewind and replay pneumatic control unit taken on line 22-22 of Figure 24-.

Figure 23 is a horizontalsecti'on of the unit shown in Figure'22 taken on line 23-23 of Figure r I Figure 2 1- is a cross section of. the unit shown in Figure 22 taken on line 2t2l of said figure.

Figure 25 is a cross section of the unit shown in Figure 22 taken on line 25-25 of said figure.

Figure 26 is a cross section of the unit shown in Figure 22 taken online 26-26 of said figure, 1

Figure 27 is a section of the rewind and replay shift control unit taken on line 27-27 of Figure 5. V V

Figure 28 is a section of said unit taken on line 28-28 of Fig.5.

Figure 29 is a sectional View taken on line 29 29 of Figure 1 showing the finger of the timing and replay control device sprung into the groove in the winding spool after the record has been unwound fromsaid spool, whereby said device operates to cause replaying of the record. 1

Figure 3G is ,a view similar to Figure 29 with the record partly wound-on the winding spool and the finger of the timing and replay control device engaging the wound record and holding said device in position causing the winding spool to wind the record slowly to play. I t

Figure 31 is a cross section of the vacuum control unit taken on line 31-31 of Figure 13.

Figure 32 is a sectional view of. the valve which controls the rewind and replay shift pneumatic.

In the drawing 1 indicates a player piano spool and tracker frame which is mounted on a bar 2 of the player piano. In the upper part of said frame are journals 3 and e for a record spool 5 carrying a perforated record 6. In the lower part of said frame is journaled a winding spool i' for winding said record upon itself and drawing; the record across a tracker bar 8 mounted in the frame 1 between the record and winding spools. A jack shaft 9 is journuled in the frame 1 on which is secured a sprocket 10. A vacuum motor 11 is mounted on the bar 2 on the crank shaft 13 of Which is secured a sprocket 14 over which and the sprocket travels a chain 15. On the shaft 9 is loosely mounted a sprocket 16 and on the record spool ournal 3 is secured a sprocket 17 over which sprockets travels a chain 18. A. clutch 19 is mounted on shaft 9 comprising a memher 20 on sprocket 16 and a member 521 slidably keyed on said shaft. A pinion is cured to clutch member 21 on the shaft 9 for engaging a gear 23 secured on the winding spool shaft 24. A lever 25 is pivoted to a bracket 26 on the frame 1 and carries a pin 27 which engages clutch member 21.

In the tracker bar 8 near its left end we provide a vent 30 and in the record 6 near its left edge and inner end we provide a perforation 31 adapted to register with vent 30 when the record has been played.

A rewind and replay pneumatic control unit includes a body 36 and a plate 37 secured to the lower face of said body, a sheet of pouch leather 88 being secured between said body and said plate. The body 36 is formed with a vacuum chamber 39 from which leads a tube 4:0 which connects to a vacuum pump (not shown). In the plate 37 of unit is formed an air chamber 41, the sheet 38 forming a pouch 42 across the chamber said pouch being formed wnh a bleed hole 1-3. The upper wall of the body 36 is provided with an openingextending from the vacuum chamber 89 to the atmos phere. A disk $5 is secured to the under side of the upper wall of the body 36 ov r the opening; L4. which disk is provided with ports 46. A disk 4-7 is secured to the top of the body 3(' over the opening 44-, which disk is provided with ports 48. 1-. valve is confined in the opening; 4:4; between the disks 42:5 and 47 and normally rests upon disk 45 and closes ports 46, the valve being mounted on a stem 51 which extends through and is reciprocatively mounted in bearings 45 and 47 in the disks 45 and 4-7. The plate 37 is provided with a. port 52 from which extends a nipple A tube 54 connects to nipple and to vent 30 in the tracker bar 8. Strips 55 and. 56 are secured to the body 36 across the top at the ends of the body, and a plate 57 is secured on said strips, upon which plate is secured a pneumatic 60. the movable end of said pneumatic resting over the strip 55. A port 61 extends from the opening 414 through the body and strip into pneuma ic 60. To

the movable member of pneumatic are connected two vertically depending rods (52 and (33 formed respectively with shoulders 1 and which respectively engage the free ends of spring valves (38 and 67 secured at their other ends to the under side of the plate 37 of unit 36. The valve 66 controls two ports and 39, the port 69 connecting with the air chamber l-l in unit plate 37. A nipple 70 is connected to the port (38. The varve 6'? controls a port 71 to which a nipple is connected. The lower ends of rods 62 and are respect *ely connected to one end of rods 73 and 7-1 the other end of said rods being connector to the movable member of pneumatics 7 and 76 secured. to one end of unit 35. Ports 77 and '78 in unit lJOf, y 36 connect at one end to pneumatics and 76 respectively and at their other end to openings 79 and 80 respect which openings extend through the upper wall of unit body 35 from chambc" 35) to the atn'ios phcre. A disk 81 is secured, to the under side of the upper wall no unit body 3'1 over the opening: 79. which disk is provided with two ports It disk 88 is secured to the top of body 345 over opening '79, which disk provided with two ports :1 valve is confined in the opening; 79 by the disks 81 and 8 which vahie normally rests upon disk 81 and (loses the pol": 82, said valve being; mounted. on a rod 86 which extends through is reciprocatively mounted in bearings 8 and S8 in the di. ks 81 and 8 disk 90 is secured to the under side of the ipper wall of unit body 256 over opening 80 which disk is pro vided with two ports 91. A

" disk 99 is secured to the top of unit bodv f8 over opening 80, which disk is provided with two ports A vs is confined within the opening" 80 by disks 90 and 92, which valve normal y rests upon disk 90 and closes ports 9' the v e being mount-ed on a rod 96. which e;-.:.ends through and rcciprocm tivelv mounted in bearings 5)? and 98 in disks 91 and 93 respectii' l); the plate OP 7 J: d; below the valve b5 is iorincd an a1rchamher 100 over the top of which. extends the. sheet 38 forming a pouch 101. said pouch being provided with a bleed hole 102. The plate 37 is provided with an air port 103 which leads to chamber 100 and is connected. to anipple 1041-. In the plate 87 below the valve 95 is forn'icd an i ir chal'nber 105 over the top of which extends the sheet 38 form inn a pouch 106 suit. pouch being formed with a bleed hole 107. A port 108 is provided in plate 37 which leads to air cham her 106 and is connected to a nipple 109. A. port 110 is provided in the unit body 36 and, plate 37, leading from the opening 44 out through said plate a nipple "1.1 '1. being; connected to outer end. i

, 158 in the side of block 151.

invention. Said unit is formed withamain vacuum chamber 116, air chambers 117, 118 and 119 below said vacuum chamber, valve chambers 120, 121 and 122 above said vacuum chamber and respectively above said air chambers, and with a secondary vacuum chamber128. A tube 124 extends intothe lower part of the unit and communicates with chamber 118. A. tube 126 connects to nipple 72 and tube 124. i

. A'rewind and replay shift pneumatic chest 180 constitutes an element of our invention. Said chest is formed with a vacuumchamher 181, air chambers 182 and188 and valve chambers 134 and 185 directly above said air chambers respectively. g A. nipple 186 leads from chamber 182 through the wall of chest 180. A. tube 137 connects to nipple 70 and to nipple 186. A nipple 188 leads from valve chamber 185 through the front wall of the chest. i

A winding spool brake 140 isinounted on frame 1 at one end of winding spool 7, said brake includinga pneumatic 141, a brake rod 142 connected to the movable member of said pneumatic, and a brake shoe 148 connected to the end of said rodto engage disk 144 on one end of the windingspool. Atube 145 connects to nipple 111 and to pneumatic 141. 1

On; the bar 2 is mounted a pneumatic timing and replay control unit 150. In a block 151 of said unit is provided two ports 152 and 158 leading from one side through the top thereof. Nipples 154 and respectively connect to the ends of ports 152 and A tube 156 connects to nipples 104 and 154. A. tube 157 connects to nipples 109 and 155. The top of the block 151 is inclined do-wnwardlyand forwardly. Valves 158 and 159 extend across the top of block 151 over the ports 15.2 and 158 respectively, said valves being hinged at their upper rear ends to said. block by hinges 160 and 161 respectively. Said valves extend forwardly of the forward edge of the top of block 151. To the under side at the forward end of said valves are secured. flat spring strips 162 which may be adjusted away from the valves by set screws 168 extending through the. valves. In a bearing 164 extending forwardly of the base of block 151 is journaled one end of a shaft 165, the other end of which'is journaled in a bearing 166 on bar 2. To the further end of shaft is secured a finger 167 which extends forwardly and upwardly at an angle in registration with an annular groove 168 in winding spool 7. Fingers 169 and 170 are secured to shaft165 by set screws 171 and 172 which fingers extend upwardly and. rearwardly at an angle into engagement with the under side of the spring strips 162 on the valves 158 and 159 respectively. A spring 17 8 is connected at one end to set screw 172 and at its other end. to the bar 2, which spring tends to rotate the shaft 165 clockwise.

- A vacuum control unit 175 controls the vacuum of the tracker bar 8 and the rewind and replay pneumatic shift control unit 115. The unit 175 has a port 176 extending therethrough from top to bottom thereof, to the upper end of which is connected a vacuum tube 177 which leads from the vacuum pump (not shown), the lower end of said port The unit 175 has a through the bottom of the unit from the pneumatic 178 into said chamber, and a port 182 leading from said chamber through an end wall of the unit. A. nipple 182 is connected to the end of the unit 175 in communication withport 182. A vacuum tube 188'is connected to nipple 182 and to the vacuum chamberof the tracker bar 8. A nipple 184 leads from port 181 through the side wall of unit 175. 0

The rewind and replay shift control unit 115 has a port 185 leading from the chamher 116 through one end wall thereof. A nipple 186 is secured to the outside of said unit end wall in register with port 185.

'A vacuum tube 187 connects to nipples 184 and 186. A port 188 leads from the secondary chamber 128 of unit 115 through the top of the unit. A vacuum tube 190 connected to the unit 115 in communication with port 188, leads fromthe motor 11. The unit has a port 191 leading from chamber 122 through one end wall. out through the bottom thereof, and a nipple 192 is secured to the bottom of the unit in communication with the outer and lower end of said port.

The rewind and replay pneumatic shift chest 180 has a port 198 extending through a side wall thereof, anda nipple 194 conneeted to said wall in communication with said port. A tube 195 connects to nipples 192 and 194. The rear wall 196 of chest 180 is secured to a wall 197 depending from bar 2. A rewind shift pneumatic 200 is secured to the chest wall 196 at one end of the chest. In the rear of chest wall 196 is recessed a passage 201, which is closed at the rear by wall 197. Port 202 is provided in the chest leading from the chamber 184 into the passage 201.. A port 208 leads from passag 201 through the wall 196 into the pneumatic 200. A. valve 204 is pivotally mounted in front of pneumatic 200 on a stud 205 projecting from one end of chest 180. A spring 206 is coiled around said stud, one end of the stud being secured to the chest and the other end secured to the valve. Ports 207 and 208 extend through the valve 204. The spring 206 tends to turn the valve 204 clockwise to- Ill 5 upper wall. of chest 130 across the lower end of valve chamber 13% said disk being provided with ports 215. i i. dish eenred to the top of the chest over the top ol" mlve chamber 134 which disk is provided with ports 21?. A valve 218 is mounted in chamber 13 5 on a stem 219 recijnocatively mounted in bearings 29.0 and in disks a 2516 respectively, said valve normally res;- ing' upon dish 214i and closing ports 21:. A pouch is secured the lower wall of the chest over the chamber 183, said pouch inc provided with a bleed hole A disk to the under side of the upper 22? is secured wall oi the chest 1 30 across the lower end (it the valve chamber 135, said disk bein provided with ports Q28. A disk 230 is secured. to the top of the chest over the top of the chamber 135, said disk being provided with sorts 231. A valve 232 is mounted within the chamber on a stem reciprocatively mounted in bearings 2314iand in disks 227 and 230 respectively. Nipples 11 and 238 are secured to the valve 204; leading) from ports 20? and 208 respectively,

To the bottom of the vacuum control u 175, within the pneumatic 178 is securen a flap valve 2&0 extending across the lower end of port 181. Said valve consists of a thin layer of wood 241 and a layer of felt on top of said wood layer. Notches 243, 24:3 and 2 -4 are cut in the under side of the valve strip flail, forming hinges to give the valve proper flexibilit in swinging; to close or open the lower end of port 181. A rock shaft 24-5 is suitably jonrua led in the pneumatic i755 and extends through one side of said pneumatic. An arm Z-iG is adjustabl secured on shaft 2&5 within the pneumatic 178 b}; a set screw 2%? and carries a pin 2&8 engaging a slot Q-l?) in the outer end of the layer 1 of valve 24:0. To the outer end of shaft- Ell-4") is secured a cranl 250 which is pivotally connected to one end of a link 1251, the other end 01 which link is pivotally connected to the lower end of accent lever which c. tends upwardly through the front plate 253 ol the piano and is pivoted to said plate by pivot The unit 175 provided with a a air chamber 355 in the under side of its upper well and aport 256 leading from said chamber through said upper wall out through one end of the unit. A nipple 257 q connected to one end of equalizer is utted in the outer end of port L pouch. ralae filth) is secured to the under side or the upper wall of the unit 175 under the chamber and directly over the upper end of port lSl. 1L tube 261 e um to nipples 257 and A nipple 262 extends through the lower part of the unit 1l5 into the air chai'nber 117. A tube 263 connects to nipples and W2. ll tube connected to nipple leads into a replay shift pneumatic 265 m untcd on the unit 115. A rod pivotally connected to the movable t ineumctics and 200 and to a crank on the lower end of a vertical rod journaled in bearings 269 in bar 2 and extending throu 'h said bar. A crank 270 is secured on the upper ml of rod und is a link the other being connected to clulch end of said lint: lever in equalizer pneumatic 5 is menu on the under side o1. unit 115. A. port leads from the main chamber .ll'd through the lower wall of said unit into said pneumatic. port 277 leads through the wall of said unit "from said pnciui'iatic into the secondary chamber 123. An equalizer valve 278 controls the port 276. Said valve includes a piece of :telt 279 secured to the under side of unit 115 at one side of the lower end of port 276, and a piece oil? wood 280 secured to the under side of said piece of felt. A tongue 281 is to med on the lor ward end of the part 280. the upper edge ct which is engaged by a clip 282 secured to the lower movable member of the squadpneinnatic A notch 288 is cut in the under side of the part 280 forming a bending point to give the valve 278 the A bracket 284i is secured to the ard part of tie movable ine-n'iber oil? the pneumatic: 275 and a spring 285 is secured at its ends to said bracket and to the unit 115, which spring tends to collapse said pneumatic. pouch 286 is sccured to the lower wall of chamber llli :n-ross the air chamber l (8, said pouch being provided with a blood hole 287. A port 2:64 is provided in the upper wall. of unit 1153 leading from chamber 116 into chamber 12']. J5. valve 290 located in chamber 121 normally rests upon the lower wall of said chamber and closes the port 288. in stem 291 depends trom the valve 290 through port 988 to a point a short distance above pouch 286. A port 292 leads from chamber 21 through the upper wall of unit 1'15 into the secondary vacuum chamber 1H3. 3i plate 293 is secured to the top of the unit 11:"), covering the top o'l chamber 121. A pouch is secured to the lower wall of chamber 116 across the top of air chamber 117. said pouch being pro vided with bleed hole 296. A port is provided in the upper wall of unit 115 leadlo we r proper flexibility to prevent the valve from 301 is secured to the top of unit 115 over the chamber 120. A screw v302 is screwed into plate 301 adapted to limit the opening of valve 298. By meansot' said screw the opening of said valve-may be adjusted. A pouch 305 is secured to the lower wall of unit 115 over the air chamber 119. A nipple 306 leads from chamber 119 out through the lower part of the unit 115. A tube 307 is connected to nipple 306 and to air valve 308 mounted in the plate 253, the handle 309 of which valve projects above said plate. A disk 310 is secured to the under side of the upper wall of the unit 115 over the lower end of the chamber 122, said disk being provided with ports 311. A disk 312 is secured to the top of said unit across the top of the chamber 122, said disk being provided with ports 313. A valve 315 is mounted within the chamber 122 upon a stem 316 which is reciprocatively mounted in bearings 317 and 318 in disks 310 and 313 respectively, said stem depending to a. point slightly above the pouch 305. The port 277 converges lengthwise. A valve 320 is mounted in secondary chamber 123 to slide upon the lower wall thereof lengthwise over the port 277. A step 321 secured to the wall of chamber 123 limits the opening movement of valve 320. Arod 322 is connected to valve 320 which extends through one end wall of the unit 115 and is connected to the lower end of an operating lever 323 which extends upwardly through plate 253 and is pivoted to said plate by pivot 324:. p

The valve 308 includes an air chamber 325 provided with an air inlet 326 and a "slide 327 mounted in said chamber adapted to slide over the inner end of the tube 307 which communicates with said chamber. The lever 309 has a fork 328 into which projects a pin 329 from slide 327 wherebythc slide is operated by the lever.

The operation of our invention is fol lows: a The record spool 5 beingplaced on the journals and 1 and the record 6 connected to the. winding spool 7, the piano motor switchis closed and the piano motor drives the piano vacuum pump in the usual man- Vacuum is established by said pump in chamber 39 oi? unit 35 through tube 10; in chamber 180 of unit 175 through tube 177, port 176, equalizer pneumatic 178, and port 181, in tracker bar 8 through tube 177 port 176, equalizer pneumatic 178, port 181, chamber 180, port 182, nipple 182 and tube 183;

in chamber 116 of unit 115 through tube 1'77, port 176, pneumatic 178, port 181, nipple 18A, tube 187 and nipple 186; in motor 11 through tube 177, port 176, pneumatic 178, port 181, nipple 181, tube 187, nipple 186, port 185, chamber 116, port 276, pneumatic 275, port 277, chamber 123, port 188 and tube 190; and in chamber 131 of chest 130, through tube 177, port 176, pneumatic 178, port 181, nipple 18 1, tube 187, nipple 186, port 185, chamber 116, ports 311, (the valve 308 being open and air being admittedthrough port 326, valve chamber 325, tube 307, and nipple 306 into chamber 119, and the valve 315 being opened by the engagement of pouch 305 with stem 316), andthrough valve chamber 122, port 191, nipple 192, tube 195 and nipple 1941. The motor 11 is operated by the vacuum therein and rotates winding spool 7 through the medium of motor shaft 13, sprocket 14, chain 15, sprocket 10, shaft 9, pinion 22, gear 23 and shaft 2 1, said pinion being in mesh with said gear. The rotation of spool 7 winds the record thereon across the tracker bar 8 and the vacuum supplied to said bar as described plays the record on the piano in the usual manner.

lVhen the record has been played the perforation 31 registers with vent 30 in the tracker bar and air is admitted through said perforation and vent, tube 5-1, nipple 53, and port 52, into air chamber 11. The air in said chamber raises the pouch as which engages the stem 51 and lifts valve 50, opening ports 4-6,.and closing ports 18. Vacuum is estab- 100 lished in pneumatic60 from, chamber 39 through ports 4:6, opening 414 and port 61,. which collapses said pneumatic and forces rods 62 and 63 downwardly and the shouldcrs 641 and 65 of said rods against thevalves 105 66 and 67 opening said valves and uncovering ports 68 and 69 and port 71. Additional air is admitted. through port 69 into air chamber 411 which maintains the pouch 12 expanded and the valve 50 open after the perforation 31 passesthe vent 30 and the record closes said vent and until the record has been rewound. Vacuum is established in pneumatic 14.1. from chamber 39 through ports 46, chamber 4141, port 110, nipple 111, 115

andtube 145, and the brake 1410 is put on the flange 14.4. of the winding spool 7 so that said spool may not rotate backwardly faster than the record is unwound there-From. Air is admitted through port'68, nipple 70, tube 137 120 and nipple 136 into air chamber 132. which raises pouch 211 and opens valve 218. Vacuum is established in pneumatic 200, from chamber 131. through port-s .215. chamber 134:;port 202, passage 201 and port 203, caus- 125 i said pneumatic to collapse and shift pinion 22 out of mesh with gear 23 and to shift the clutch 19 into operation, through the medium of rod 266, crank 267. shaft 268, crank 270, link 271, lever 25, The motor 11 13 0 then rotates the record spool 3, baekwardly, through the medium of motor crank shaft 13, sprocket 14, chain 15, sprocket 10, shaft 9, clutch 19, sprocket 16, chain 18, sprocket 17 and journal 8, and the record 6 is rewound on the record spool, and unwound from spool 7 which is rotated backwardly. The collapsing of pneumatic 200 opens valve 204 and admits air through port 208, nipple 238, tube 261, nipple 257, port 256 into chamber 255 which expands pouch valve 260, and closes port 181, and shuts off the vacuum in the chamber 1S0 port 182, nipple 182', tube 18-3 and tracker bar 8, while the record is being rewound. Air is admitted through port 7]. tube 126, and nipple 124; into air chamber 118, which raises pouch 286 and high speed valve 290 and materially increases the vacuum in motor 11 from chamber 116 through port 288. chamber 121, port 292, chamber 123 and tube 190 thus causing the motor to rewind the record at a high speed. The opening of valve 20 1 admits air through port 207 nipple 237, tube 263, and nipple 262 into air chamber 117, raising pouch 295 and slow speed valve 298 and pro viding vacuum in secondary chamber 128 from chamber 116, through port 297, chamher 120 and port 300 which at this time adds to the reverse speed of the motor and the re winding speed of the record.

As the record is rewound upon record spool 5 andv unwound from winding spool 7, the arm 16? is swung forwardly under the influence of spring 178 against the unwinding record on spool 7 and when said arm engages the record near the end of its unwinding from spool 7, the arm '70 (which is set in advance of arm 169) lifts valve 159q and admits air through port 153, nipple 155. tube 157, nipple 109 and port 108 into chamber 105. The air admitted into chamber 105 raises pouch 106 against valve stem 96 and raises valve 95, establishing vacuum in pneumatic 76 from chamber 39 through ports 91, chamber 80, and port 78 and *ollapsing said pneumatic which, through red 74, trips the shoulder 65 of rod 63 off the end of valve 67 which springs closed, closing ports 71. The closing of port 71 shuts off the air from chamber H6 (see Fig. 22) through tube 126, whereupon the high speed valve 290 drops upon its seat and shuts off vacuum in chamber 123 from chamber 116 through port 288, cham her 121, and port 292 thus greatly reducing the vacuum in the motor 11, which then runs at a slower speed on the remaining vacuum supplied to the motor from chamher 116 through'port 297, chamber 120, and port 300, and from said chamber through port 276, equalizer pneumatic 275, and port 277,, through chamber and tube 190. hen the record 6 completes its rewinding to a point where all the music perforations of the record have passed above the tracker bar and the forward end' of the record has left the arm 167 but not the spool 7, said arm swings forwardly into groove 168 in the spool 7 under the influence of spring 173 and the arm 169 lifts valve 158 and admits air through port 152, nipple 15 1, tube 156, nipple 104i; and port 103 into air chamber 100. The air admitted into air chamber 100 raises pouch 101 against valve st m 86 and raises valve 85 establishing vacuum in pneumatic from chamber 30 through ports chamber 79 and port 7'7, and collapsing said pneumatic which through red 73 trips the shoulder 61 of rod 62 off the end of valve 66 which springs closed, closing; ports 68 and 69. The closing of port 69 shuts off air through said p rt into chamber 411, the air being also shut off from said chamber through port nipple 53, tube 5 1 and vent 30 by the record. over the vent, and the air in said chamber is exhausted through bleed hole 4-8 by the *acuumpump, whereupon. the valve 50 drops upon disk 4-5 and closes ports 4:6, shuttingoil the vacuum in pneumatic 60 through said ports, chamber 414: and port 61 which pneumatic expands'under pressure of air admitted therein through ports 18, chamber 4 1 and port 61 and draws rods 62 and 6S upwardly until the shoulders 6-1 and 65 swing over the ends of valves 66 and 6? respectively. The closing of port 68 shuts off air through said port, nipple 70, tube 137 and nipple 136, from chamber 132, whereupon the air is exhausted from said chamber through bleed hole 312 and valve 218 drops upon disk 214: and closes ports 215. The dropping of valve 218 shuts off vacuum to pneumatic 200 through ports 215. chamber 134;, port 202, passage 201 and port 203. and to chamber 133 through ports 215, chamber .134, port 202, passage 201, extension 209 and port 210, and admits air into pneumatic 200 through ports 217, chamber 134. port 202, passage 201, and port 203, and into air chamber 133 through ports 217 chamber 134-. port 202, passage 201. extension 200 and port 210. The air admitted into chamber 133 raises pouch 225 which, engaging stem raises valve and establishes a vacuum in replav shift pneumatic 265 from chamber 131 through ports chamber 135 nipple 138 and tube 26 1 which collapses said pneumatic. The collapsingof pneiunatic 265, through the medium of rod 266. crank 26? shaft 268, crank 270, link 271 and lever 25, shifts clutch 19 out of operation and the pinion 22 into mesh with gear 23 whereupon the winding spool 7 is rotated forwardly by motor 11 through motor shaft 13 sprocket 1% chain 15. sprocket 10 shaft 9, pinion 22, gear 20 and snaft and the record 6 is Wound, on said spool and drawn over the tracker bar 8. The admission of air into pneumatic 200 and the 207 and 208. The closing of port 208 shuts off air through said port, nipple 238, tube 261, nipple 257, port 256 to chamber 255 and the air is exhausted from chamber 255 tln'ough a bleed hole 255 leading from the chamber into vacuum chamber 180, whereupon the valve 260 is lifted off its seat over port 181 and vacuum 18 established in the tracker bar, from said vacuunrchamber said chamber through bleed hole 296, caus-c ing tle pouch 295 to collapse and the valve 298 to drop on its seat and close port 297 which shuts off vacuum to the motor 11 Cir through said port, chamber 120, port 300,

chamber and tube 190. Vacuum is then" supplied to the motor :tr'om chamber 116 only through port 276, pneumatic 275, port 2T7, chamber 123 and tube 190 and the motor is run slowly for playing the record in the usual manner. When the record isplayed the above described operation is repeated as many times as desired.

hen the rewinding ot the record is nearly completed, by closing the valve 308, the shifting of the pinion 22 into mesh with gear 23 and replaying ot. the record may be prevented so that the record may be completely rewound and removed from its jourals and another record placed into position v to be played. The closing oi val ve 308 shuts off air through valve port valve chamber 825, tube 307 and nipple 306 to air chamber 119, whereupon the air in said chamber is exhausted therefrom through bleed hole 305 in pouch 305 and the valve 315 drops on disk 310 and closes ports 311. The closing of ports 311 shuts ofit'vacuum through said ports, chamber 122, port 191, nipple 192, tube 195, nipple 194; and port 193 to vacuum chest 131, which prevents vacuum in replay shitt pneumatic 265 from said chest and the operation of said pneumatic. IVhcu a new record is put in place, upon opening valve 308 the pneumatic 265 will be operated to shift the pinion 52 into mesh with gear 23 to play the record as above described.

By swinging the lever 323 the valve 320 may be shifted over the port 277 to vary the vacuum and speed of the motor and the time of the music. i

By swinging lever 252 the valve 240 may be swung toward or away from the lower end of port 181 to vary the vacuum supplied to the tracker board and cause the piano to play loudly or softly.

collapsing of pneumatic 265 closes the valve 204: and its ports Having described our invention, we claim: 1. In. combination with a player piano,

'means for automatically rewinding the record at a high speed, for automatically reducing the rewinding speed when the rewinding is nearly complete, and for auto-- matically replaying the record at a still slower speed.

In combination with a player piano, a linger engaging the record on the winding spoolas the record unwinds therefrom, and means actuated by said finger when the record is nearly rewound tor rewinding the record at a slower speed and for automaticall re )la in the record at a still slower speed when the record. has been rcwound.

3. In combination with a player piano, the

tracker bar thereof being provided with a rewind control vent, the music record being provided with a rewind control perforation adapted to register with said vent when the recordhas beenplayed, an an: chamber connectcdto said vent, a pouch over said air chamber, a pneumatic, a valve actuated by the expansion of said pouch under the influence of the air admitted into said chamber through said record perforation and said tracker bar vent to create vacuum into said pneumatic, said chamber being provided with an air port, a portcontrolling valve opened by said pneumatic for admitting air through said port into said chamber to maintain vacuum in said pneumatic, another valve opened by said pneumatic, means actuated by said latter valve when opened for enabling the motor to rewind the record and to shut off the vacuum from the tracker bar.

4;. In combination with a player piano, the tracker bar thereof being provided with a rewind control vent, the music record being provided with a rewind control perforation adapted to register with said vent when the record has been played, an air chamber connected to, said vent, a pouch over said air chamber, a pneumatic, a valve actuated by the expansion of said pouch under the influence of the air admitted into said chamber through said record perforation and said tracker bar vent to create vacuum into said pneumatic, said chamber being provided with an air port, a port controlling valve opened by said pneumatic for admitting air through said port into said chamber to maintain vacuum in said pneumatic, another valve opened by said pneumatic, means actuated by said latter valve when opened for enabling the motor to rewind the record and to shut off the vacuum from the trackerbar, and means for automatically enabling said latter valves to close when the record is rewound.

5. In combination with a player piano, the tracker bar thereof being provided with a rewind control vent, the music record being provided with a rewind control perforation adapted to register with said vent when the record has been played an air chamber connected to s 'd enh a pouch over said air chamber, a PDQUHhLiJlC, a valve actuated by the expansion oi? said pouch under the indie rnco ol the air admitted into said chaml or through said record perforation and said tracker bar vent to create vacuum into said pneumatic, said chamber being provided with an air port, a port controlling valve opened by said pneumatic for admitting air through said port into said chamber to maintain vacuum in said pneumatic, another valve opened by said pneumatic, means actuated by said port controlling valve for slowing down the rewinding speed of the record when nearing the end of its rewind, and means actuated by said latter valve for enabling the motor to rewind the record and to shut oil the vacuum from the tracker bar.

6. In combination with a player piano, the tracker bar thereo'l being provided with a rewind control vent, the music record being provided with a rewind control perforation adapted to register with said vent when the record ias been played, an air chamber connector to said vent, a pouch over said air cl'iamber, a pneumatic, a valve actuated. by the expansion of said pouch under the influence oi. the air admitted into said chamber through said record perforation and said tracker bar vent to create vacuum into sai-l pneumatic. said chamber being provided with an air port, a port controlling: valve opened by said pneumatic tor admitting air through said port into said chamber to main tain vacuum in said pneumatic, another valve opened by said pneumatic means actuatod by said port controlling valve for Slo ing down the rewinding s ieed of the record when nearing the end of its rewind, means actuated by said latter valve 'lor enabling; the motor to rewind the record and to shut oil' the vacuum from the tracker bar, and means for automatically enabling said latter valves to close when the record is unwound.

.ln testimony whereof We afiix our signatures.

HAROLD A. VAN VALKENEURG, BURT R. VAN VALKENBURG. 

